STMicroelectronics ST7FLIT19BY0M6

Overview

ST7FLIT19BY0M6 from STMicroelectronics is an 8-bit Flash microcontroller with 4 KB XFlash program memory, 256 bytes RAM, 128 bytes data EEPROM, 10-bit ADC with integrated op-amp, dual 12-bit auto-reload timers (4 PWM outputs), SPI interface, and analog comparator - deployed in industrial sensor nodes requiring low-power operation and mixed-signal control.

For engineers reviewing the ST7FLIT19BY0M6 datasheet, ST7FLIT19BY0M6 pinout, ST7FLIT19BY0M6 application, or ST7FLIT19BY0M6 equivalent, key selection criteria include its 2.7–5.5 V operating range, 8 MHz max CPU frequency (with PLL x4/x8), 17 I/O lines (7 high-sink), and support for five power-saving modes including Halt and Auto Wake-up from Halt.

Technical Context

This MCU implements an enhanced ST7 8-bit core with true bit manipulation, 8×8 unsigned multiply, and 17 addressing modes. Its clock system integrates a factory-trimmed 1% internal RC oscillator, optional PLL (x4/x8), and external crystal/ceramic resonator support up to 16 MHz.

The peripheral set includes two independent 12-bit auto-reload timers delivering four PWM outputs and input capture, a dedicated watchdog timer, and a 10-bit ADC with programmable gain op-amp and seven analog inputs - all accessible via configurable I/O ports with interrupt capability on 15 lines.

Key Specifications

Pinout & Package

ST7FLIT19BY0M6 is packaged in a 20-pin SOIC (SO20 300 mil) with 0.6 mm pitch, compliant with JEDEC MS-013AC. Pin functions are validated per ST's official datasheet Rev 6 (June 2008), Figure 2 and Table 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with ST7FLIT19BY0M6, the ST7FLITE15BY0M6 reduces Flash and omits the comparator - limiting autonomous fault response - while the STM8S003F3P6 trades op-amp integration for higher clock speed and memory, increasing analog front-end complexity.

Availability

ST7FLIT19BY0M6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC actuators, energy meter front-ends, and programmable power supply monitors requiring stable component supply across extended product lifecycles.

Supply support for ST7FLIT19BY0M6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade components since 1987.

The ST7LITE1xB series was engineered for cost-sensitive, low-power embedded control applications demanding integrated analog peripherals, robust flash endurance, and flexible clocking - targeting industrial automation and appliance control markets.

FAQ

What is the maximum guaranteed write/erase endurance of the data EEPROM?

The ST7FLIT19BY0M6 data EEPROM is guaranteed for 300,000 write/erase cycles with 20-year data retention at 55°C. This specification is verified per ST's characterization testing and applies under standard operating conditions (2.7–5.5 V, –40°C to +85°C). Endurance is unaffected by ICP/IAP operations on Flash memory.

Does the internal 1% RC oscillator require external components?

No external components are required for the internal 1% RC oscillator. It is factory-trimmed and ready for use upon power-up. Calibration register values (RCCRH0/RCCRL0) are stored in option bytes and automatically loaded; users may optionally adjust trim bits for fine-tuning if needed, per Section 7.1 of the datasheet.

Can the analog comparator trigger a hardware reset?

The analog comparator output (COMPOUT on PA7) does not directly assert RESET. However, it can generate an interrupt (via ei1 vector) to initiate controlled shutdown or set a flag for software-triggered reset. For hardware reset on comparator trip, external logic (e.g., open-drain OR gate with pull-up) must connect PA7 to the RESET pin.

Is In-Application Programming (IAP) supported in all power modes?

IAP is supported only in Active and Wait modes. It is disabled in Halt, Active-Halt, and Slow modes due to clock gating and peripheral suspension. To perform IAP, the device must first exit low-power mode via interrupt or wake-up event, then re-enable Flash programming logic using the appropriate control registers (FLASH_CR1/CR2).